JPH06504699A - stretching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Stretching device Technical field The present invention is a surgical stretching device for expanding tissue, such as skin, particularly in connection with surgical procedures. It is related to.

problem If there is a skin injury or a scar or birthmark on the skin, or if any of the skin If the location has other defects, remove this defect and replace the defect. Sometimes it is necessary.

A major problem with these surgical procedures is the transfer of the defective skin to the location where it was removed. The goal is to obtain skin that is healthy enough for transplantation.

Skin can be removed from a person's thigh, for example, and transplanted. deer However, even if you cut out the skin from such a healthy part of the human body, you will not be able to remove all the skin. Because it cannot be cut out and only the outer surface of the skin is often removed, transplantation is not possible. However, it is not a complete skin replacement. The transplanted skin is thinner and has an inner layer. lacking. In this way, the skin cannot be completely removed from a healthy area. This is because the skin in the cut area needs to be able to grow back and recover. This is because the skin cannot be cut too deeply.

Technology background However, there are ways to achieve complete replacement of materials such as skin when necessary. Man The body can gain skin itself so that the skin tissue expands in advantageous locations.

An expansion prosthesis, a silicone balloon with a filling nipple, is implanted under the skin. Inject salt solution into this silicone balloon to achieve skin expansion and growth. Filling allows the skin to expand, usually under anesthesia. sufficient To obtain a suitable amount of skin, fill the valve with equal time intervals through the implanted filling valve. It is then necessary to add new fluid to the bladder. for several months , the surgeon visits the patient every week to do this. This method of tissue expansion is It is called the Radovan tissue expansion method and was first performed in 1970. ten When adequate skin has been formed, remove the defective skin, i.e. the altered area, and remove the expanded skin. After being introduced into the recess and removing the expanded prosthesis, the expanded skin is sutured.

The patient had to undergo anesthesia twice and visited the doctor once a week for several months. This method does not allow for the regeneration of the replaced tissue. This is an inconvenient method. -Means to solve problems Therefore, it is less painful for the patient, cheaper, faster and easier than known methods. A device that expands tissue has been desired for many years. Expand tissue, especially skin. The surgical tensioning device of the present invention comprises one or more threads, bands, etc. a tightening device for tightening at least one end of the thread, band, etc., for example to the skin; Tighten the other fixed end of the thread, band, etc., e.g. to the skin or to other configurations consisting of this other end. and another tightening device for tightening, at least one of the tightening devices including the Providing a one-way nib or similar device for the thread or band, which At least one of the tightening devices is connected to the other tightening device on the thread, band, etc. to reduce the distance between the tightening points and expand the patient's tissue outside the tightening points. It is characterized by

According to the invention, all the threads or bands have their ends introduced into a common tightening device. Preferably, the stretching device comprises individual threads or bands.

According to the present invention, the tightening device is constituted by an elongated body having an arc-shaped cross section, and the band , or a through hole for the thread, and a thread that grips the concave side of the arc, or a band Preferably, the tightening device is provided with a blocking device that surrounds the clamping device.

It is preferred that the blocking device be formed in one piece with the elongated body, but as a separate unit. It can also be formed.

Further, according to the present invention, the thread can be blocked by a rotatable lockable knob or the like for winding the thread. The device can be configured.

According to the invention, a hook for fixing to the skin or the like may be provided on the underside of the tightening device.

In this case, according to the invention, it is possible to provide a rigid curved part in the central region of the band or thread. Good.

According to the invention, the tightening device and the band are made of plastic material, and furthermore the thread, Alternatively, it is preferable that the band is curved but not too elongated. be. The band can also be made strong and made of rod-shaped material.

Brief description of the drawing The invention will be explained in more detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the stretching device of the present invention seen from above.

2 is a partial cross-sectional view of the device of FIG. 1 from the side; FIG.

FIG. 3 is an enlarged partial cross-sectional view of the tightening device of the tensioning device of the present invention.

Detailed description of the invention In FIG. 1 showing a preferred embodiment of the present invention, a tightening device 2 having a similar structure to each other is shown. Insert both ends of the four bands 1. Skin to be removed from the skin between the tightening devices The number of bands can be changed depending on the width of the area. Band 1 is this device The band between the tightening devices is under the skin, i.e. inside the skin, during use. It is in a stretched state. Surgeons using the tensioner of the present invention can i.e. by creating a channel within the skin, a band or Implant thread l. At the end of the channel from which the band protrudes, a tightening device is placed 2 and clamp around the ends of these bands with this tightening device. Ru. Pull the tensioners as close to each other as possible before clamping tightly. . In this way, the skin on the outside of the tightening device is stretched and the skin between the tightening devices is pulled together. to press against. After a while, move the tightening devices 2 closer to each other again and tighten the tightening devices. Additional stretching of the skin outside the area. Even stretched skin quickly loses tension when subjected to tension. This is possible because it extends to . Depending on the amount of skin to be removed, i.e. , the skin outside the tightening device after a period of time that is longer or shorter depending on the area between the tightening devices. In this case, the tensioning device is almost fully extended.

The tightening device can then be removed and the band or thread removed. tightening device The lesions between 2 are very small, coalesce into wrinkles, and cannot be tightened by the tightening device. This lesion can be removed after suturing the outer stretch of healthy skin. Wear.

FIG. 2 shows the device of the invention seen from the side. Band l is implanted into the skin 3 The skin 3 is brought together between the tightening devices 2 and wrinkled. In this way, Stretch the area of healthy skin 4 outside the tightening device 2.

FIG. 3 is an enlarged sectional view of the tightening device 2. FIG. As is clear from Figure 1, the tightening The tube 2 is elongated and has an arc-shaped cross section.

A block device 5 is provided inside this arc shape, and this block device! By 5 Clamp around point l at point 6.

At the same time, the blocking device 5 is crimped and held on the concave side of the tightening device 2, and the band l is pulled. When tightened, this band l moves outwards relative to the tightening device 2, but at the same time In the opposite direction, it is locked to prevent movement. In this way, the expansion of band l tension is carried out. A hole 7 is provided in the tightening device 2 through which the band or thread is moved.

Although the invention has been described in terms of preferred embodiments, the invention is susceptible to various modifications. Can be done. For example, the blocking device 5 can be made in a separate piece from the tightening device, or can be built in one piece. These pieces can be made of plastic material. , and the same applies to bands.

Materials that can be used in the device of the present invention include those that are acceptable to the skin, that is, the human body. It also needs to be sterilized. Bands or threads may bend. is required, but preferably not extended. band to expand means that the tension force of the device is reduced. Even if it is strong, it is difficult to hold the bar-shaped material. It can be used as a command.

A blocking device can be constructed as a knob around which a thread can be wrapped. the In some cases, it is not appropriate to use a band.

In order for a rotatable knob to maintain tension, it is necessary that the knob can be locked. It is essential.

To securely lock the thread or band, the blocking device may be equipped with a screw. Wear. The advantage of having such a blocking device is that it can be loosened if necessary. It is possible. Combining screws and latches in the same block device is also effective, or by placing a blocking device with a screw at one end and a latch at the other end. It is also possible to arrange a block device that

Alternative to providing a movable blocking device along the thread or band at both ends thereof Alternatively, a simple stop can be provided at one end of the band or thread. Like this For example, stretching of the band or thread occurs only at the other end.

In another embodiment of the invention, a hook-like protrusion is provided on the underside of the tightening device so that the hook is in contact with the skin. It can be placed completely external to the skin.

This has the advantage of not requiring channels under the skin, i.e. inside the skin. There is. The skin between the tightening devices can of course be removed later. In this example One drawback is that the skin between the tightening devices is folded and pressed against the band l. That is.

Therefore, the central part of these bands is strong, curves outward, and folds the skin. This embodiment is suitable when creating space for.

According to another embodiment of the present invention, a suitable adhesive that can maintain reliable adhesion over a sufficiently long period Allows the tightening device to be attached to the skin with a suitable adhesive. In this case, Do not wait until the removal surgery is complete until you can remove the piece of skin between the tightening devices. I can do that. In this example, adhesive is applied to the underside of the tightening device and removed. Protect the adhesive with a suitable tape that can be removed.

The stretching device of the present invention can also be used as follows. In other words, connect both ends to the skin. Instead of, for example, implanting selected tissues protruding from the skin. "Put one end on the spike J and the other end on the skin. In this case, the skin should be tied in one direction. Of course, it can be expanded only to This can be done, for example, when stretching the skin of the thigh. , is advantageous. In this case, a strip placed inside the buttocks is used to secure one end of the tensioner. You can use a pike and use a regular tightening device to secure the other end to the skin. The skin can be stretched upwards, such as when pulling up stockings. direction is done.

The invention has been described in terms of expanding skin tissue. other forms like muscle Of course, the device of the present invention can be applied to expand the tissue of the patient. in this case , it is necessary to implant the stretcher, and that is entirely possible.

The stretching device of the present invention can be used to stretch the skin of almost the whole body. This stretcher Of course, the position is particularly suitable for stretching the skin of the arms and legs. This thing is , which is particularly advantageous when using the Radovan expansion prosthesis. Traditional dilation methods often have negative results in these parts of the body. It is the body.

The stretching device of the present invention can be manufactured at a low cost and is extremely cheap compared to conventional methods. It can be used for value. The stretching device of the present invention also provides a very relaxing overall experience for the patient. Treat promptly.

To summarize the above, the present invention has the following advantages compared to conventional methods.

1. The stretching device can be applied under local anesthesia.

2. The patient is usually able to perform the dilation himself.

3. Possibility of rapid expansion.

4. Expansion is possible from both directions.

5. Very low cost.

The present invention is not limited to the illustrated embodiments, and various modifications may be made within the scope of the claims. Can be done.

international search report international search report PCT/SE　92100121 ;==:koqzzr:z:=1=-1--111 慴V'M'""""11nw- s++Pa-6mamIsIs+w-1Y-&-ken・he劃-...++--11 -1-mra@Kami1cbwa---1yuv-wamp≠Chichi|・---・-me+wn llsa Continuation of front page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IT, LU, MC, NL, SE), 0A (B F, BJ, CF, CG, CI, CM, GA, GN, ML, MR, SN, TD, T G), AT, AU, BB, BG, BR, CA, CH, C3, DE.

DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MG, MN, MW, NL, No, PL, RO, RU, SD, SE, US

Claims (8)

[Claims] 1. One or more threads (1), bands (1), etc., and these threads (1), bands A tightening device (2) for tightening at least one end of the cord (1) etc. to the skin (3), for example. ) and the other fixed end of said thread (1), band (1), etc., for example to the skin (3), or and another tightening device (2) for tightening to some other configuration of the other end; At least one of the tightening devices (2) has a mechanism for the thread (1) or the band (1). A one-way nip or similar device is provided, thereby reducing the tension of said tightening device (2). At least one of the threads (1), band (1), etc. is directed toward the other tightening device (2). Reduce the distance between the tightening points by moving the top of the In a surgical stretching device for expanding the skin, each said tightening device (2) has an arc-shaped consisting of an elongated body with a cross section, a penetration for said thread (1) or band (1); the thread (1) or band held in contact with the hole (7) and the concave side of the arc; (1) and a block device (5) that surrounds the elongated body. Surgical stretching device. 2. Lead both ends into a tightening device (2) common to all said threads (1) or bands (1). A claim characterized in that it comprises a plurality of threads (1) or bands (1) that are Surgical stretching device according to Box 1. 3. characterized in that the blocking device (5) is formed as an integral piece with the elongated body. A surgical stretching device according to any one of claims 1 and 2. 4. said blocking device (5) being formed as a separate unit from said elongated body; A surgical stretching device according to any one of claims 1 and 2, characterized in that: 5. The block is equipped with a rotatable lockable knob or the like that winds up the thread (1). According to any one of claims 1 and 2, Surgical stretching device. 6. The band (1) or the thread (1) has a rigid curved part in the center. The surgical stretching device according to claim 1, characterized in that: 7. The tightening device (2) and the band (1) are made of plastic material. A surgical stretching device according to any one of claims 1 to 6. 8. The thread (1), band (1), etc. are curved or stiff, but are not soft. The surgical stretching device according to claim 1, characterized in that it cannot be stretched. Place.